Packaging Resource Center: The Latest in Bottles and Closures
Precut Cap Liners
A line of precut cap liners has been expanded to include new designs for foam polyethylene, foil seal, pressure seal, pulp and foil seal, and crosslinked polyethylene foam. Standard cap sizes range from 20 to 120 mm. The manufacturer also offers custom diameters, shapes, and substrates for unique applications. The caps are designed for use with packaging machinery such as induction sealers. Many of the foil caps can be printed on. The cap liners are designed to provide sealing characteristics that act as barriers against air and moisture. Pres-On, Addison, IL; 800/323-7467; www.pres-on.com.
An inspection and detection system for caps and bottles searches for missing foil, loose or crooked caps, and stalled bottles. Using multiple optical sensors, a laser sensor, an encoder, and microprocessor control from the induction sealer, the system is designed to prevent unsealed product from ever reaching the end-user. It features external indicators for easy sensor alignment and an integrated induction sealer and detection system. A stacked light can be added to provide visual and audible alarms cautioning the operator of a potentially unsealed product. The system’s pneumatic reject mechanism is designed to kick defective caps and bottles off the packaging line. The reject mechanism also searches for the rejected items to verify they have been removed from the packaging line. Pillar Technologies, an ITW Company, Hartland, WI; 262/912-7200; www.pillartech.com.
A closure system for drum containers features a visual indicator that tells the operator when the container closures are properly sealed. The optical verification is designed to increase sealing accuracy. The Visegrip II closure system is a redesign of the manufacturer’s original Visegrip system. The new design uses a mechanical insertion process to install the flange to provide more security, even with light-gauge steel drum construction. Once the plug is properly tightened into the flange, the container material is sealed. The Visegrip was redesigned to make the new model more effective at preventing sealing errors, as well as gasket rupture, cutting, or shearing when plugs are tightened. It also comes with the option of using an all-plastic overseal that can be snapped into place by hand without requiring the use of a crimping tool. A metal seal is also available for more stringent tamper-evidence. The Visegrip II plugs are identified with an engraved VGII and yellow chromate plating so that they are easy to distinguish from the original Visegrip plugs. Rieke Packaging Systems, Auburn, IN; 260/925-3700; www.flatoutworksbetter.com.
A company offers 500- and 1000-ml HDPE bottles for specialty chemicals. Bullet Round bottles are designed to be an unbreakable alternative to glass bottles traditionally used for storage and shipment of specialty chemicals. They feature a wide opening for easy filling and pouring and weigh less than glass bottles. The neck of these bottles shares the same neck and cap size (38/439 neck) as 1-gal and 4-L HDPE containers. The 500- and 1000-ml bottles are offered with either a flat or pressure bottom. The pressure bottom is designed for chemicals or products that can build internal pressure at low temperatures, which can result in bulging or distorted bottoms and can compromise container stability. The bottles are available blow-molded using compressed air or filtered nitrogen gas. In addition, they can be fluorinated to chemically modify the interior surfaces, creating an inner barrier that resists permeation by nonpolar (oil-based) solvents. The 500-ml bottle is 7.46 in. tall and 2.83 in. diam. The 1000-ml bottle is 10.535 in. tall and 3.25 in. diam. Novapak Corp., Eatontown, NJ; 800/975-2784; www.pvcc.com.